Virtucon probably has the best answer. Remember that PI can locally produce some pos fuels as well.

If anyone in your corp trained a few PI skills to try it out, encourage them to make the non-ice pos fuels for laughs (robotics, mech parts, oxygen, uranium). Even if your corpmates are not into PI, there will eventually be a few 1000 units of pos fuel lying around in system on various planets. This really helps with an unexpected pos fuel cushion when you are running low on fuel.

Our alliance uses carriers and cynos them in, just don't become complacent and always refuel on the same day at the same time. If someone notices a pattern like that they can scout out your pos and get a fleet together to smash it.

You could always mine the ice and use PI. However, if you don't like ice mining, it could be very easy to set up a PI operation and import the rest. Cyno's and carriers/jump freighters are probably a good way to get those in.